6ES5 955-3NC41
6ES5 955-3NF41
Protection and monitoring
Voltage monitor
Monitors voltage for
<14V and >16V
Monitors voltage for
< 14V and > 16V
Overvoltage shutdown U
A1
6V
±
5%
6V
±
5%
Undervoltage signal U
A1
4.75V + 3%
4.75 V + 3%
Current limiting for overload
1.0 to 1.2 I
AN1
1.0 to 1.2 I
AN1
Test sockets for I
A1
on front plate
(3V = 18A)
(3V = 40A)
Signalling section
Signals for SIMATIC S5,
relays: "Fan Warning,
Fan Alarm, Warning" 250V/3A
Signals for SIMATIC S5,
relays: "Fan Warning,
Fan Alarm, Warning" 250V/3A
Green LED: "5 V o.k." for U
A1
LED lights up if
4.75V < U
A1
LED lights up if
4.75V < U
A1
Output 2
Rated output voltage U
AN2
24 V DC (+25 %, -12.5 %)
24 V DC (+ 25%, -12.5%)
Rated output current I
AN2
1 A DC
2.8 A DC
Total current X2 and front terminals
1 A max.
2.8 A max.
Ripple
≤
1% of U
A2
≤
1% of U
A2
Spikes
≤
2% of U
A2
≤
2% of U
A2
Protection and monitoring
Current limiting for overload
1 to 1.3 I
AN2
1 to 1.3 I
AN2
Green LED "24V o.k." for U
A2
LED lights up if
U
A2
>19.9 V to 21.1 V
LED lights up if
U
A2
> 19.9 V to 21.1 V
Output 3
Rated output voltage U
AN3
15 V DC (
±
5 %)
15 V DC (
±
5 %)
Rated output current I
AN3
0.5 A DC
2 A DC
Ripple
≤
1 % of U
A3
≤
1% of U
A3
Spikes
≤
3% of U
A2
≤
3% of U
A2
Protection and monitoring
Overvoltage shutdown U
A1
17V
±
5%
17V
±
5%
Current limiting for overload
1 to 1.5 I
AN3
1 to 1.5 I
AN3
Green LED "15V o.k." for U
A3
LED lights up if
14.2 to 14.7 V < U
A3
< 16.1
to 17.9 V
LED lights up if
14.2 to 14.7 V < U
A3
< 16.1 to
17.9 V
Power Supply Units
System Manual
4 - 58
C79000-B8576-C199-03